* removed trailing whitespaces in button tids
* defined a global left margin for buttons set to 5px
* slightly less than in view-mode before
* slightly more than in edit-mode before
* but visually more appealing to me
* leaves a wee more room for the title to unfold
Reasons:
- can show or hide the button text with CSS (assuming
tv-config-toolbar-text is yes).
- can have different looking buttons in the page controls versus the
view toolbar, etc
- more flexibility styling the button appearance, for example you
can change the text size compared to the icon size
- button appearance is more themeable
